Combination Lock Joint or Device. Page: 2 of 4
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UNITED STATES PATENT OFFICE.
ERNEST WILLIAM CARLETON, OF AUSTIN, TEXAS, ASSIGNOR OF ONE-HALF TO
WILLIAM M. WALTON, OF AUSTIN, TEXAS.
COMBINATION LOCK JOINT OR DEVICE.Specification of Letters Patent. Patented July 25, 1911.
Application filed May 27, 1908. Serial No. 435,363.To all whom it may concern:
Be it known that I, ERNEST WILLIAM
CARLETON, a citizen of the United States, re-
siding at No. 1404 Red River street, in the
5 city of Austin, county of Travis, and State
of Texas, have invented a new and useful
Combination Lock Joint or Device for Sec-
tional Poles, of which the following is a
specification.
10 This invention relates to sectional poles
and method of uniting the sections thereof.
The object of the invention is to provide
a pole, the construction of which is such that
the tendency of the pole to bend or buckle is
15 reduced to a minimum.
A further object is to provide a pole capa-
ble of being readily lengthened or short-
ened and which will effectually withstand
the deleterious action of the elements for an
20 indefinite period.
A further object is to provide a pole in-
cluding a plurality of sections having seat-
ing recesses formed in the abutting ends
thereof for the reception of a plastic core,
25 means being provided for compressing the
core while still green or in a plastic state,
thereby to fill the seating recesses and thus
effectually lock the pole sections in assembled
position.
30 A further object is to provide means
whereby the plastic material constituting
the core may be readily introduced within
the pole sections, and the compression means
adjusted to effect the formation of a mortar
35 joint.
A still further object of the invention is
generally to improve this class of devices so
as to increase their utility, durability and
efficiency.
40 Further objects and advantages will ap-
pear in the following description, it being
understood that various changes in form,
proportions and minor details of construc-
tion may be resorted to within the scope of
45 the appended claims.
For a full understanding of the invention
and the merits thereof, reference is to be had
to the following description and accompany-
ing drawings, in which:
50 Figure 1 is a side elevation of a sectional
pole constructed in accordance with my in-
vention; Fig. 2 is a detail vertical sectional
view, showing the manner of connecting the
upper solid section of the pole to the adja-
55 cent hollow section; Fig. 3 is a similar view,showing the manner of connecting the inter-
mediate sections of the pole; Fig. 4 is a
transverse sectional view taken on the line
4--4 of Fig. 3 and looking in the direction
of the arrow; Fig. 5 is a similar view taken 60
on the line 5-5 of Fig. 4 and looking in the
direction of the arrow; Fig. 6 is a detail
perspective view of the disk or cap detached.
Corresponding and like parts are referred
to in the following description and indicated 65
in all the views of the drawings by the same
reference characters.
The improved pole forming the subject
matter of the present invention comprises a
plurality of superposed sections 5 preferably 70
cylindrical in shape, as shown, and tapered
in the direction of their length from the
bottom to the top of the pole. The sections
5 may be formed of cement, porcelain, glass,
netal or similar material, but are preferably 75
made of concrete, molded into the proper
shape, each section having a reinforcing core
6 embedded therein and provided at its op-
posite ends with laterally extending flanges
7 which abut against corresponding flanges 80
formed on an adjacent section. The oppo-
site ends of the core 6 are preferably extend-
ed laterally at 8 to reinforce the flanges 7,
said flanges being pierced by vertically
alined openings for the reception of bolts 85
or similar securing devices 9, there being
suitable plates or washers 10 interposed be-
tween the opposite ends of the bolts and the
flanges 7 to assist in strengthening the latter.
Each pole section 5 is provided with a 90
vertically disposed bore 11 which registers
with the bore of an adjacent section when
said sections are united, thus to form in ef-
fect a hollow structure. The walls of the
bore 11 of each section at the opposite ends 95
thereof are provided with wedge-shaped
seating recesses 12 for the reception of a
plastic core or filling 13 so as to form a mor-
tar joint or lock at the junction of the sev-
eral pole sections and thus hold said sections 100
in assembled position. Each pole section 5
is provided with a laterally extending open-
ing 14 intersecting the bore 11 and opening
through one side of the section to permit the
introduction of the plastic material consti- 105
toting the filling or core 13.
Extending through the core 13 is a verti-
cally disposed rod 15, one end of which is
secured in any suitable manner to an end
piece or disk 16, while the other end thereof 110998,839.
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Carleton, Ernest William. Combination Lock Joint or Device., patent, July 25, 1911; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth514250/m1/2/: accessed April 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.